Hotbed.



" A. T. KELLER.

HOTBEDj APPLICATION FlLEDi-JAN- 15. I916- LW WMQ I v Patented June20,1916.

3 SHEETS-SHEET 1-.

A. T. KELLER,

. HOTBED.

APPLICATION FILED JAN. 15, 1916.

, v Patented June 20,1916.

3 SHEETSSHEET 2.

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A. T. KELLER. Home!) APPLICATION FILED JAN. 15, $916.

Patented June 20, 1916.

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- MWJW M ALBERT T. KELLER, U15 CHICAGO, ILLINOIS.

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useful Improvements in Hotbeds, of which the following is aspecification; I

My invention relates to the steel industry, and has particular referenceto a novelhotslender shapes during the cooling thereof.

An object in the present construction is to provide a bed ofthecharacter'described which shall be, for all practical purposes,perfectly balanced, 6., one in which the load to belifted is ineffectcounterbalanced by a descending load in another portion of the device.Much less power is required for the operation of a balanced bed, andthis is an important consideration for the rea-- son that the entireload must be lifted a very' large number of times during a days operation. I

A further object is the provision of in which the rods or bars shall bemaintained in parallelism, or, in other words,

step into adjacent notches and kept straight while cooling. A stillfurther object is the provision of an apparatus which shall combine thedesired result in a simple and economical manner and without the use ofparts which become worn and require frequent replacement.

Theinvention will be more readily understood by reference to theaccompanying drawings, wherein v Figure l is a' side elevation of a hotbed constructed in accordance with my inven tion; Fig. 2 is a plan viewthereof; Fig. 3 is a section on the line 33of Fig. 1, and Fig. 4: is afragmentary end elevation of the means for discharging the bars onto thehot bed. i 1

In the drawings, it will be seen that on suitable supports 10, 11, llmount transverse girders 12, 13, which serve to support the aryskids arethelifting bars 19, 20. In-

a bed Specification of Lettersiatent. 'Pimlrenptwfll J 1 mm 2(1), 1916,7 Application filed January 15, 1916. Serial No. 72,214. i i I steadofproviding a single lifting bar which is of a length substantiallyequal to that of the stationary skid, I sever the liftingbar into-twolengths-and provide duplicate mountings for each length. These mountingscomprise girders 21, 22, which extend transversely from side to side ofthe bed. A. connecting beam 23 Joins the girders 21, 22, and providesbearingsfor links bed adapted for use in the handling of long,

24, 25, secured to the longitudinal girders 26 at their opposite ends.By providing two links of equal length, I secure a parallel p a walkingor balanced beam 28, having a bearing on the foundation block 29. Apitman 30 is connected at one end to. the walking beam and at the otherend to a crank31 on a shaft 32 through which motion is imparted, throughsuitable slow down gearing, by means of a motor 33. It will be noted, byreference to Fig, 3, that the connections described are duplicated onthe opposite sides ofthe bed.

The rods, such as shown in Fig. -1, are received by the feeding-in rolls16, and, after reaching the proper point, are dis charged into the firstnotch of the stationary skids by means of the lever 34, the discharg'ing position of the lever being shown' in Fig. 4. Assuming that theshaft 32, which carries the crank 31, 1s movlng 1n a clock- 'wisedirection, the lifting bars 20 will be in its travel will cause thedescent of the lifter bar 20, the rod'sliding easily down the incline ofthe notch in the stationary skids, being held by the notch 35 in thelifter bars until it reaches practically the low point of the notches15. As the lifter bars 20 are traveling upward, the lifter bars 19 aretraveling downwardand are supporting a portion of the weight of the barson the latter half of the bed. Thus it will be seen Mechanismconstructed as described will out of repair.

that the load is equalized, or balanced, to a certain extent; at anyrate the weight of-the lifter bars and parts thereof,- which weight isConsiderable, is exactly balanced, and the only power necessarilyexerted is that used to overcome .frictionand move the rod up theincline to the high point of the notches.

relation to each other, substantially as described.

2. Iii a hotbed, the combination of a plurality of fixed supporting barshavingnotches i'ntheir upper surfaces, a pair of lifting bars disposedbetween each adjacent pair of supporting bars, said lifting bars beingdisposed in end-to-end relation, means for supporting'said bars inbalanced relation, means for'maintaining said lifting bars in ahorizontal POSltlOIl'ilIld means for alternately raising and-loweringsaid lifting bars in opposed relation, substantially as described. I

- 3. In a'hot bed, the'combination of a series of notched stationarysupports, a pair of lifting bars between adjacent supports, the

combined length of said pair oflifting bars being substantially equalto' the length of the stationary bars, a balanc d. beam cennot liable tobecome I .trally pivoted and connected to each of said lifting barswhereby the weights of said lifting bars are balanced, means foroscillat' ing said balanced beam and means for maintain'ing said liftingbars horizontal, substantially as describedv '4. In a hot'-bed, thecombination of a p111 rality of stationary notched supports, a pair oflifting bars located between adjacent supportsv and disposed inend-to-end relation,

said lifting bars being provided with notches which, in one position ofsaid'lifting notches in said stationary support, a balanced beam forsupporting and substantially balancing said lifting bars, and a'motorfor oscillating'said balanced beam andthereby causing-an alternateraising and lowering'of said lifting bars in opposed relation,'substantially as described.

5. In a hot bed, the combination of a plurality of fixed, notched'supports, a plurality of pairs of lifting bars, one pair of saidbars'being disposed between adjacent stationary supports, each pair oflifting bars being disposed in end-to-end relation, each lifting barbeing connected to a support in such manner as to be maintained in ahOilZQlltillPOSltlOIl, a balanced beam having a fulcrum at its middlepoint and being connected at its end to each of said pair oflifting barswhereby the weight of said barsbars, are staggered with relation to theI are balanced, and means for oscillating said balanced beam,substantially as described.

Signedat Chicago, Illinois, this 5th day of January, 1916. ALBERTTQKELLER. Witnesses.: v

' NoRnIs E.- CRUL HARRY I. ALLEN.

